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JOURNALS // Chebyshevskii Sbornik // Archive

Chebyshevskii Sb., 2024 Volume 25, Issue 5, Pages 45–56 (Mi cheb1493)

On the property of antinormality of two-born subgroups of a free group

N. B. Bezverhnaya

Moscow Technical University of Communication and Informatics (Moscow)

Abstract: The question of studying the property of antinormality of subgroups is important, since this property is used in the study of various properties of groups (for example, hyperbolicity of groups) and various algorithmic problems in groups.
The proposed article gives a complete description of all antinormal two-generated subgroups with a certain condition imposed on the generators of this subgroup contained in a free group of rank greater than one.

Keywords: free groups, antinormality of subgroups, algorithmic problems.

UDC: 511.32

Received: 23.08.2024
Accepted: 26.12.2024

DOI: 10.22405/2226-8383-2024-25-5-45-56



© Steklov Math. Inst. of RAS, 2026